STMicroelectronics’ IPS8160HQ and IPS8160HQ-1 new high-side switches provide eight channels in a compact QFN48L package — with the added value of built-in protection and diagnostics. This unique combination of features saves space and enhances reliability in PLC modules used for driving heavy loads and unidirectional motors in vending machines.
Additional applications for the new switches include I/O peripherals in factory automation equipment, computer numerical control (CNC) machines, and in general for controlling resistive, capacitive, and inductive loads with one side connected to the ground.
Both switches have low on-resistance (RDS(on)) of 160mOhm (typ.at 25º C), which helps minimize power dissipation.
The overload (OVL) and junction over-temperature (OVT) protection for each channel prevents damage to circuits, minimizing any disruption caused by temporary faults. The overloaded channels turn off and restart automatically, keeping junction and case temperatures below safe maximum levels while the non-overloaded channels continue to operate normally.
For added safety, the device turns off immediately in the event of ground disconnection. There’s also overvoltage protection, undervoltage lock-out (UVLO), short-circuit protection, output-current limitation, and an over-temperature fault indicator.
The IPS8160HQ has a preset current limit of 0.7A and the IPS8160HQ-1 current limit is 1A. Both switches have an operating-voltage range from 10.5 to 36V and are featured to facilitate meeting international standards for industrial equipment. These include IEC 61131-2 for process controllers and IEC 61000 specifications for electromagnetic compatibility (EMC), electrostatic discharge (ESD) immunity, electrical fast-transient (EFT/burst) immunity, and surge immunity.
Users can quickly evaluate the IPS8160HQ and IPS8160HQ-1 driving and diagnostic capabilities with the X-NUCLEO-OUT9A1 and X-NUCLEO-OUT19A1 digital output expansion cards for STM32 Nucleo boards, which can be connected to 1A industrial loads.
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